Movie hype and drama.
On one side, there are people who wants something new in the Aikatsu! formula, and they got what they wanted by adding a major plot, the “legendary idol gone sour” kind of plot and giving supporting cast of characters that weren’t in the arcade games some purpose or relevancy.
On the other side, there are people who wants to keep things as they were — An anime series that doesn’t follow the melodramatic footsteps of their counterparts, an anime series that’s lighthearted, colorful, comfy and with good music. A series that’s all about a group of girls doing idol activities and nothing more.
I’m on the latter.